On Wed, 24 Mar 2021 03:05:08 +0000, Jianjun Wang <jianjun.wang@xxxxxxxxxxxx> wrote: > > Add MSI support for MediaTek Gen3 PCIe controller. > > This PCIe controller supports up to 256 MSI vectors, the MSI hardware > block diagram is as follows: > > +-----+ > | GIC | > +-----+ > ^ > | > port->irq > | > +-+-+-+-+-+-+-+-+ > |0|1|2|3|4|5|6|7| (PCIe intc) > +-+-+-+-+-+-+-+-+ > ^ ^ ^ > | | ... | > +-------+ +------+ +-----------+ > | | | > +-+-+---+--+--+ +-+-+---+--+--+ +-+-+---+--+--+ > |0|1|...|30|31| |0|1|...|30|31| |0|1|...|30|31| (MSI sets) > +-+-+---+--+--+ +-+-+---+--+--+ +-+-+---+--+--+ > ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ > | | | | | | | | | | | | (MSI vectors) > | | | | | | | | | | | | > > (MSI SET0) (MSI SET1) ... (MSI SET7) > > With 256 MSI vectors supported, the MSI vectors are composed of 8 sets, > each set has its own address for MSI message, and supports 32 MSI vectors > to generate interrupt. > > Signed-off-by: Jianjun Wang <jianjun.wang@xxxxxxxxxxxx> > Acked-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx> Reviewed-by: Marc Zyngier <maz@xxxxxxxxxx> M. -- Without deviation from the norm, progress is not possible.
